seventeenth

From Old English seofontēoþa, equivalent to seventeen +‎ -th.

• IPA^(key): /ˌsɛvənˈtiːnθ/

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• Rhymes: -iːnθ
• Hyphenation: sev‧en‧teenth

seventeenth (not comparable)

1. The ordinal form of the number seventeen.
   • 1913, Theodore Edward Dowling, chapter III, in Gaza: A City of many Battles‎^[1], page 40:

     Mr. Edward Glasser maintains that this people existed from about the seventeenth century B.C., and that the Sabæans followed them in the occupancy of those regions.

English ordinal numbers may function as either an adjective or as a noun, and almost never appear in the plural.

17th, 17^th; (in names of monarchs and popes) XVII

seventeenth (plural seventeenths)

1. One of seventeen equal parts of a whole.

   A seventeeth of 340 is 20.

2. (music) An interval of two octaves and a third.